Jeep bulletin 18-029-25
What it saysNot applicable to vehicles built for the US Market. NHTSA’s full summary ↓
Jeep filed this with NHTSA as a service bulletin dated Oct 25, 2025, received Jun 18, 2025, about the power train — 4 documents under this number: 18-029-25 REV. C, 18-029-25 REV. B, 18-029-25 REV. A and 1 more. It names 1 model year (2023). A service bulletin is not a safety recall: it is the manufacturer telling its dealers how to diagnose or repair a condition, and whether the work is paid for depends on the warranty in force. Quoting the number at a service desk can save a diagnosis.
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What the bulletin says
Source: NHTSA's summary of the manufacturer's communicationWhat it applies to, as the document itself states it — the build window in the manufacturer’s own words, read by machine from the PDF NHTSA serves. The build date is on the certification label in the driver’s door jamb; the dealer settles a borderline vehicle by its VIN.
NOTE: Not applicable to vehicles built for the US Market. Flash: Powertrain Control Module (PCM) Updates Customers must experience a Malfunction Indicator Lamp (MIL) illumination and the vehicle must exhibit/set the following Diagnostic Trouble Code (DTC): ● P0129 - Barometric Pressure Out Of Range Low. Customers may also comment on the following: ● Car jerks during acceleration at low speed. This bulletin involves inspecting and possibly reprogramming the PCM with the latest available software.
Trouble codes it names: P0129
Documents filed under this number
| Document | Kind | Dated | NHTSA id | At NHTSA |
|---|---|---|---|---|
| 18-029-25 REV. C | Service bulletin | Oct 25, 2025 | 11024567 | |
| 18-029-25 REV. B | Service bulletin | Jul 11, 2025 | 11020756 | |
| 18-029-25 REV. A | Service bulletin | Jul 8, 2025 | 11020765 | |
| 18-029-25 | Service bulletin | Jun 11, 2025 | 11019615 | PDF, 131 KB |
What the document itself lists
Labour operations and the time the manufacturer allows
| Operation | Description | Time |
|---|---|---|
| 18-19-06-TI | Module, Powertrain Control (PCM) - Inspect | 0.2 hrs |
| 18-19-06-T0 | Module, Powertrain Control (PCM) - Inspect and Reprogram | 0.3 hrs |
Read by machine from the document NHTSA serves (2 pages), read Sep 30, 2026. A part number is shown only where it matches Jeep’s own catalogue shape, an operation only with its code and time, and a description only where the reader got it whole; anything it could not settle is left out, and the PDF is the record. Times are the manufacturer’s warranty allowances, not a quote. Listings and prices on eBay Motors are the seller’s.
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The summary is NHTSA’s abstract of the document, as filed under 49 CFR 579.5. One communication is usually filed as several documents — the bulletin, a dealer notice, an owner letter — and the number on any of them finds this page. A PDF link is shown only once NHTSA’s own server has been seen to serve that document; the rest are checked over the following nights. Quote the number at a service desk; it is what the dealer’s system is keyed on.
Model years it names
Source: as the manufacturer filed themA vehicle page’s bulletin list shows the newest few communications filed against that model year; the count there is every one.
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What owners reported
Source: NHTSA complaint databaseOwners of the 1 model year this bulletin names have filed 56 complaints with NHTSA since 2015. 23 of them name Electrical System, Power Train — the same broad component group this bulletin is filed under. NHTSA groups complaints coarsely, so that means the same area of the vehicle, not necessarily the same fault.
This Jeep gladiator has not started on several occasions. And is now stuck in our driveway not turning over the engine. This apparently is a known problem and has stranded my family. Has Also stopped all the electrical with the engine driving down the road when my husband was returning from work, this is a safety issue please respond
2023 Jeep Gladiator · Electrical System · filed with NHTSA Jul 19, 2024
The contact owns a 2023 Jeep Gladiator. The contact stated that the vehicle was repaired under an unknown recall by the previous owner; however, the check engine warning light illuminated. The contact examined the vehicle and became aware of some loosened fasteners.
2023 Jeep Gladiator · Power Train · filed with NHTSA Apr 30, 2024
A complaint is one owner’s account, not a defect finding, and a bulletin is not a recall. Nothing here says this bulletin was issued because of these complaints, or that the repair it describes fixed them. Complaint files on this site begin in 2015.
More bulletins about the power train
Source: same model, same component group31 other manufacturer communications filed against the Jeep Gladiator under the same component group (power train), newest first. The eight newest are listed; the rest are on the Jeep list.
| Number | Kind | Dated | NHTSA’s summary |
|---|---|---|---|
| S2621000003 | Service bulletin | Mar 9, 2026 | The vehicle will exhibit a service transmission/check engine warning indicator for the following transmission models: 845RE, 8HP45, 850RE, 8… |
| S2603000001 | Service bulletin | Feb 25, 2026 | A suspected leak may be noticed on the front or rear axle pinion seal. |
| 9100749 Rev 1 | Service bulletin | Jan 7, 2026 | axle seal We have observed that some JL/JT rear axle shafts are leaking oil. Replace axle shaft and seal together. Do not replace seal only.… |
| S1721000016 | Service bulletin | Dec 19, 2025 | Service 4wd Light On, AWD System Service Required Message Illuminated. Diagnostic Trouble Code (DTC) C14A7-97 PTU Motor Component Or System… |
| 18-087-25 | Service bulletin | Oct 1, 2025 | Flash: Powertrain Control Module (PCM) Updates Customers must experience a Malfunction Indicator Lamp (MIL) illumination and the vehicle mus… |
| 9100627 | Service bulletin | Jul 14, 2025 | To inform dealers about the 850RE valve body PN: R8348504A connector: the original 16-pin connector included six pins that were not used in… |
| 21-009-25 REV. B | Service bulletin | Jul 4, 2025 | "850RE D Clutch Repair **Customers must experience a Malfunction Indicator Lamp (MIL) illumination and the vehicle must have at least 11,26… |
| 9100570 | Service bulletin | May 12, 2025 | "Transmission Fluid Please note fluid color/condition/odor is NOT an indicator of transmission health and should not be used as the reason f… |
Quote the number at the service desk. It is what the dealer’s system is keyed on.
Every manufacturer communication NHTSA holds for Jeep, by the number printed on the letter.
Common questions
Source: NHTSA, 49 CFR 579.5Is Jeep 18-029-25 a recall?
No. A service bulletin is a manufacturer communication filed with NHTSA under 49 CFR 579.5; a safety recall carries an NHTSA campaign number (two digits, a letter, six digits) and a federal duty to repair for free. Check the vehicle’s recalls by VIN at nhtsa.gov/recalls, or on its page here.
Is the 18-029-25 repair free?
Not automatically. A service bulletin describes how to diagnose or repair a condition; who pays depends on the warranty in force, any extension, and the dealer. Quoting the number can save a diagnosis either way.
Which vehicles does 18-029-25 cover?
The manufacturer filed it against 1 model year: 2023 Jeep Gladiator. Whether one particular vehicle is affected is a matter of its VIN and its build, not its model year alone. The document itself sets the build window: built on or before 21 Nov 2023 — the build date is on the certification label in the driver’s door jamb.